Improvement in utilization of the waste of paper manufacture as an anthncrusta



UNITED STATES PATENT QFFICE,

THOMAS ROUTLEDGE, OF FORD, NEAR SUNDERLAND, AND WILLIAM H. RICH- ARDSON, OF SPRINGWELL-JARROW-ON-TYNE, GREAT BRITAIN, ASSIGN- ORS TO WILLIAM RENNYSON, OF BRIDGEPORT, PENNSYLVANIA.

IMPROVEMENT IN UTILIZATION OF THE WASTE OF PAPER MANUFACTURE AS AN ANTHNCRUSTA- TOR FOR STEAM-BOILERS- Specification forming part of Letters Patent No. 156,103, dated October 20, 1874: application filed September 8, 1874.

To all whom "it may concern:

Be it known that we, THOMAS ROUTLEDGE, of Ford, near Sunderland, and WILLIAM HEN- RY RICHARDSON, of SpringwellJarrow-on- Tyne, both in Great Britain, have invented certain new and useful Improvements in the utilization of certain waste products of paper manufacture as an anti-incrustator; and We do hereby declare the following to be a full and exact description thereof.

In the manufacture of paper or paper-stock by treating esparto, straw, or other vegetable matters with alkali. caustic, or partly caustic and partly carbonate, there results a solution which is either thrown away or has to be evaporated down and reburnt-in the one case involving a loss, and in the other an expense.

We have discovered that the said refuse material produced in the operation of paper THOS. ROU'ILEDGE. WM. HENRY RICHARDSON.

Witnesses J. A. LOUDON, COLLIN SMART. 

